Filler-cup and closure for pressure-tanks



R. E. MACDONOUGH.

FILLER CUP AND CLOSURE FOR PRESSURE TANKS.

APPLICATION FILED JUNE 21, 1920. 1,397,320 Patented Nov. 15, 1921,

S w a a n 2 7 m4 M d W Fa H271 07 1c7 Z7396 7771 a 71 flaeJorwu hRAYMOND ENGELMAN MACDONOUGH, 0F MINNEAPOLIS, MINNESOTA.

FILLER-CU1P AND CLOSURE JEOR'PRESSURETANKS.

Application filed June 21,

To all w ham it may concern:

Be it known that I, RAYMOND ENGELMAN MACDONOUGH, a citizen of the UnitedStates, residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented a new and useful F iller-Cup and Closure forPressure-Tanks, of which the following is a specification.

My invention relates to improvements in filler-cups and closures forpressure tanks.

Its object is to provide a simple, durable, compact and inexpensivedevice of this kind, particularly, though not exclusively for sprayers,adapted to allow ready access to a tank and permit the convenientcharging and sealing thereof.

A further object is to supply a device of this kind, provided with meansadapted to cooperate with pump mechanism, whereby a mounting for thepump is furnished, means for actuating the removable sealing member ofthe device is supplied and means for conveniently carrying the tank isprovided.

With the foregoing and other objects in view, which will appear in thefollowing description, the invention resides in the novel combinationand arrangement of parts and in the details of construction hereinafterdescribed and claimed.

In the drawings, Figure 1 is a central sectional View illustrating adevice embodying my invention, the pressure tank and pumping mechanismbeing illustrated only in part; Fig. 2 is a central sectional view indetail of the filler-cup, said section being taken at right angles toview shown in Fig. 1; Fig. 3 is a sectional view taken on the line 3-3of Fig. 1 and shows the filler-cup and sealing cap in plan; Fig.4 is anelevation of the sealing cap and Fig. 5 is a sectional View in detailtaken on. the line 55 of Fig. 4, the lugs on the pump plunger, beingillustrated in opposed operative relation.

Referring to the accompanying drawings, I have used the referencenumeral 10 to indicate the top of an upright pressure tank, 11

Specification of Letters Patent.

Patented Nov. 15,1921. 1920. Serial No. 390,328.

casting 16 having an opening 17 in the bottom thereof and an annularsupporting shoulder 18 at the upper margin of said opening. Segmentalflanges 19 on the inner periphery of the filler-cup and above theshoulder 18 are formed to provide cam surfaces 20 on the under sidesthereof. A gasket 21, or other suitable sealing element, 1s placed uponthe shoulder 18 to receive the thrust of a removable sealing cap B. Thiscap includes a disk-like body 21 having peripheral segmental flanges 22adapted to fit between the ends of flanges 19 on the cup A and passbeneath said flanges, when the cap is turned. The upper sides of theflanges 22 are formed to provide cam surfaces 23 adapted, upon a slightturn of the cap, to coact with the cam surfaces 20 of the flanges 19 onthe cup and seat and lock the cap B securely against the sealing elementin the bottom of the cup. A head 24 with angular sides provides forturning the cap B to secure the same within the cup or release ittherefrom. It will be noted here that the cup provides a receptacle forfluids introduced to the tank, thus eliminating the necessity of the useof a funnel; that the relatively large opening at the bottom of the cupprovides for quickly filling a tank and'that the cap B, when seated, issubstantially contained within the confines of the cup.

My device is particularly adaptable to center pump sprayers and thelike. The opening 17 in the cup A receives the barrel 11 of the pumpmechanism and the flange 13 on said barrel rests upon the gasket 21. Thecap B is formed with a bore 25 to receive the plunger rod 12 and thehead 24 on said cap is cored out as shown in Figs. 1 and 5, radialabutments 26 being stationed in opposed relation and a key-way 27 beingformed in the upper side of said head. The engagement of the cap .13against the barrel 11 holds the latter in place. Upon the insertion ofthe lugs 14, through the key-way 27 and a slight turn of the handle 15in either direction, said lugs are held against removal from the head 24and serve as hangers, in the event that it should be desired to carrythe tank by the handle 15. A further turn of the handle impinges thelugs 14 against the abutments 26 within the head 24 and results inseating the cap, when the direction of rotation is to the right. Whenthe direction of rotation is to the left, the

- impingement of the lugs 14 against the abutments 26 results inreleasing the cap B from the flanges 19 on the cup, said cap beingthereafter readily removed from the cup, by lifting upon the handle 15.

My improved device is particularly advantageous because of itssimplicity, compactness, cheapness of manufacture, and its variousdesirable features in the use thereof.

Changes in the specific form of my invention, as herein disclosed, maybe made within the scope of what is claimed without departing from thespirit of my invention.

Having described my invention, what I claim as new and desire to protectby Letters Patent is:

1. The combination with an externally flanged barrel and plungertherefor having opposed lugs thereon, of a filler-cup having an' openingin the bottom thereof to removably receive said barrel, an annularshoulder at the margin of said opening, internal segmental flangeswithin the filler-cup above said shoulder, a gasket resting upon theshoulder and adapted to receive the flange on the barrel, a removablecap, segmental flanges on said cap arranged to engage be ne-ath theflanges of the cup and cooperate therewith to firmly secure the cap inholding position against the cylinder, said cap having a bore therein toslidably and revolubly receive the plunger, a hollow head on said turnedand released from the cup or fixed in clamped relation with respectthereto.

2. In a device of the class described, the combination with a barrel andplunger therefor, of a filler-cup adapted to removably receive saidbarrel, a cap removable from said filler-cup, cooperating members onsaid cap and filler-cup arranged so that when the cap is turned througha partial revolution in one direction it may be removed from thefiller-cup and when turned through a partial revolution in the reversedirection it is clamped in holding position against the barrel whereinthe connection between said barrel and filler-cup is made pressureproof, said cap having a bore therein to slidably and revolubly receivethe plunger and members on said cap and plunger designed to be movedinto and out of cooperative relation, said members in cooperativerelation being adapted to result in the turning of the cap when theplunger is turned.

In testimony whereof, I have signed my name to this specification.

RAYMOND ENGELMAN MACDONOUGH.

